I click on OK and get a box that says "Enter your user name and password for the following server". Server: imap.gmail.com. Then it asks for my username and password, which I provide and hit "OK". But it just brings me back to the the original error message and I try doing it all over again. It won't let me copy & paste the long URL into the browser, so I type it in but always get a message that there is no such page. Can anyone help?

It just occurred to me to try and get in via my iPhone and that works, but I can't get in via my laptop.